php preg_replace with Unicode chars

Question

I\'ve a question similar this question: php preg_replace

In that question, He/She want to allow only letters and numbers and _, but I want to allow only numbers, lett

Answer 1

Instead of listing the unicode ranges yourself, you should use an Unicode character class as explained here: http://www.regular-expressions.info/unicode.html#block

preg_replace('/[^\w\d\p{L}]/u', "", $str);

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